A Bi-level Model for Low Voltage Distribution Network Planning Simultaneously with the Voltage Stability of Medium Voltage Network

Document Type : Original Article

Authors

Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

Abstract

In this paper, a model for distribution network expansion planning is presented, which is based on a bi-level model and can resolve the conflict between the medium and low voltage distribution networks in the size and optimal placement of transformers. In the proposed model, the upper and lower levels are medium and low voltage networks, respectively. The conflict between the two levels is that each network tends to determine the location and size of the transformers according to their wishes. Therefore, this paper has tried to solve this conflict, which is the size and location of transformers, by presenting a bi-level model, and to reach an optimal point that is in accordance with the desire of both levels. The objective function of the first level is the voltage stability criterion and the objective function of the second level is to reduce the operating and investment costs by considering distributed generations. Since the desired model is non-linear, it is solved using the tabu search by splitting the model into two sub-problems. To show the effectiveness of the proposed model, the problem is solved in three different scenarios and necessary comparisons have been made.

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References

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TABRIZ JOURNAL OF ELECTRICAL ENGINEERING
Volume 54, Issue 4 - Serial Number 110
December 2024
Pages 423-432

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